All excellent advice. I'll add that in addition to a few tiny holes mentioned above, scuff all areas of contact so the epoxy has the best chance of biting fast.
Remember too, epoxy doesn't adhere worth a tinker's dam to end grain. So for the area behind the recoil lug I trim the wood back about 1/16", and bevel the edge where that end grain meets the ledge behind it to provide a more substantial hunk of epoxy on that transition area.
